Question

I try to

Collection.Aggregate(0.0,(current, next) => current += next.decimalValue);

but I get error of casting decimal to double

another issue: For “Sum” Linq the seed is the default type value?
meaning seed = 0 for decimal…

Answer 1

The compiler interprets 0.0 as a double, you need to specify the type as a decimal. Try the following:

Collection.Aggregate(0m, (current, next) => current += next.decimalValue);

The m suffix indicates that the numeric real literal (in this case 0) is a decimal.